Piston-valve.



gg into the `p :wats

extend between tom vulve und pms (la before y, a rectanular packing vc'oinpinsed,'of four yparts suc andi'f 1 pistonvalveis that whenstlfle' engine is runs nin at'ja I -high engine speed and the valvfe j 1, f' chamber Atoga vsmall-erarea, thusjgiyingaback f y, gessuretliroughout the valvear'rangenient.v

i Lthl'ou hfrelief portE, The eccentrics before descri ed controlling ythe valve andlitspistn" 1 are so [timedy thatwhen the valve' has 1. fully :closedthe intake and exhaust ports, therelie ",.port E and having alongertravel, continues i ton B is' at outermostcpoint v and 4 ready to 1 {.re', both-the relief valve and itspiston are theintake and exhaust strain from the valve,

the power as `compared "with, thatfderi-ved in connection" with the usual `puppetvalve ofvr pistoni'valve. constructedandope'rating as kvalve 1 engines.'

` construction `of :my improved pistonf valve 1 g enables they 'same' to operate successfully and without theformationof compression `which t isusuall'ya drawback in thisrform of valve, articularly 1in connection with internal com- .y ustion'engines. I fifi'Iclaiml'lf-` H 51; :Thecombination with a cylinder, a sidek 1` y'one end ofwhich opens into the cylinder, and;

y-termediate itsends of a piston lvalveislidable as shown in Fig. f5,'the'fparts'y KQ f offvvhichjaregrooved attheir 1lendsft'o re,.

t ceive'tenons on" the ends ofthe parts `Kv as'v clearlyy 'seen byv a comparison zof Figsgg In operation, the objection ythe usualk "L itse :E` vpassestlie ports, closing ot 'either the 'intake 'or exhaust or both, it compresses the `1 "at their outermostpointwith allports closed.,k o .Theadvantageof this'type of valve isthatj. rvit-l'najy travelat-a highy rate ofwspefed` without: compression( or `back pressure' 1 afterpassing 1 ports, thus takingfal y Alpir on valvethusconstructed and oper.-y o ating', vvwill l. greatly decrease the noise irilcon` nectionwith yan internal combustion engine,`

fandvvill atf'the same time" materially increase the'sarne bore vand stroke.L 1 Fu rthermore",1a'

described, will obviate the ynecessity for .allg

" y"roclfer arms, puppets, valve springsfand the 1 multitudinous cams `usually incident to' the,"

construction `of f internal comloljlstion ,i bore having vfuel" ports for the cylinder and Y y -lWitnesses: 1, in the'bore-tocoverand uncover thflifcylinder` Y. -4 1 11'1p01ts and having 1a body opening `axially i. thereoanda leading outwardly through itsside fromthesaid axial opening to regis-v tervvith tliel'saidrelieflport u'henjhe valve c coversthercylinderfgports, a piston workingl inl the gopeninglof'yvthe' valve and controlling itssaidkport,fandfnieans for moving thepis- 1K.'

tony valveiand'its p isto'nlinthebore and with respect to onesanother; f, 4..-2. The combination within c cylinder, a side1 bore `havingfuel/ports;furthe cylinder and :one end of which opens into the cylinder, and y a reliez'c'y port leading fromithesaid bore inter-1 inthe; borfegto cover and uncoventhe .cylinder o n l mediate itsendsgf oaf a piston valve slidable 1 k ,n ith'frny` construction, 1just `asi the valve. A. passes the 'intakmand' enhaustjports, 'ther o ports and having abody opening axially thereofand aport'leading ontw ardly through' ,itssidefroinfth'e axial :opening to register K with the saidxrelieport when the valve covers `vthe cylinder ports, a` piston working j in theopeninglof; the yvalve andrcontrollingy f jpiston"y holding `open the passagethrough its-sport, va shaft' having geared connection movementsyof the;valvey and its iston, the

ffpiston controllingosehbeing su stant'ially 'f T 1r,larger` than theulvalvej controlling offset,

whereby to give ythe piston' of the 'valve bothj movement fwithfthejvalve in the bore 'andl opening, 1 i 1.

with respect y:"tofrthey 'said vvalv'vefin its axial". 1

y 1 3.Q'I'h"combinationwithacylinder, aside'` bore having fuel'ports -for `the cylinder and, f. openingat 'one'endythereint/o, and a relief yportleadin from thesaid bore intermediate `its, ends; fo a 'ported.piston4 valve operating in `the Ybor-e1 tofcoverf and uncover the said 4fuel' ports, ,and a. istoncperating with the y.valve and, lcontrol 'in' port With'the saidre ief Qpo'rt. 1

communication of its 1 4; Thecombianionmm a eyiiaaer, a Sida' bore having'ifuel [ports-for thecylinder and' f opening at `one' end'thereinto, and a relief .,port'leading froin-v the said bore intermediate itsiends;` of a piston valve haw'inf.;A ports vand piSOnlfor con-trolling niovementthereof, certain offthefo'sets ofgjtheisaid eccentric, 'con-`r o nected to 1:the pistonyixbeingb substantially 1 larger, than :the offset.l the'reoffconnected"to 1 the gva'lyc, iwherebyto increase 4tlie'strok'e off/1""`r *1 thelnpiston with respect tothat of the l'valve l inivhich itworks'' '1 i1 ajtelief'portsleading romwthc said" borei'insv`A` ,JAMESV- HICKEY.,

` y, c Y j; y operatingfin.thesaidvbore'to control the saidf l' '1 :In inldltion` tothe aloov'eythey particular-fuel ports,f'a 'piston vop'erating within the"y rvalve and eontrollingl its ports, a driven j 

